.box {
  width: 100%;
  height: 100%;
  background: url(../img/sign-bg.jpg) no-repeat;
  background-size: cover;
}
.box main {
  margin-top: 0.483092rem;
  flex: 1;
}
.box main li:nth-of-type(2) {
  display: flex;
}
.box main li:nth-of-type(2) input {
  width: 4.827053rem;
}
.box main li #captcha1 {
  width: 3.26087rem;
  height: 1.207729rem;
  margin-left: 0.241546rem;
}
